[opendtv] Re: --FCC OKs WiFi between TV channels
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 19 May 2004 10:12:28 -0400
At 4:45 PM -0400 5/18/04, Manfredi, Albert E wrote:
>There's something weird about this concept.
>
>One of the criteria for reducing the spectrum assigned to
>broadcast TV, I thought, was that the tabboo rules in
>place since NTSC, particularly wrt UHF, can now be
>greatly reduced. And too, I thought, ATSC stations
>can exist in adjacent channels with NTSC stations, so
>even more so with other ATSC stations. That was even
>supposed to be one of the advantages of having a 8-VSB,
>with its low peak to average ratio.
Careful here. REDUCED is the operative word; as long as we persist in
using big high powered sticks, we will need to protect the taboo
channels in adjacent markets. The shift to digital transmission has
made it possible to squeeze in more channels with minimal
interference into the NTSC service; it's is a very tight fit, and we
are learning that it will not work as well as advertised when all of
the DTV transmitters are operated at the full authorized power levels.
>
>So while this concept of allowing non-TV RF users to
>pick up unused bands might be technically valid, it
>should be also legally and technically possible for
>broadcasters to install more OTA stations, and use
>the spectrum they were assigned more completely?
Only with properly designed, spectrally efficient networks. If we
stay the course, these alternative, very low power uses of the taboo
channels will continue to be the only viable option.
>
>The question then would be, what would existing OTA
>broadcasters prefer? Non-TV squatters on their spectrum,
>or more OTA competition?
Uhhhhh. NEITHER!
Protecting the status quo is the whole point of this farce that we
are calling a DTV transition.
Regards
Craig
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